Grinding-mill.



No. 669,060. mma Fab. 26, mm.-

T. CASCADEN, 1n.

GRINDING HILL.

(Application filed Jan. 18, 1899.

2 Shady-Sheet 2.

(No Model.)

l ma"- Wlbwa/de i Liz/Q m2 Qa/MM ll iTn STATES PATENT DFFICE.

THOMAS CASOADEN, JR., OF WVATERLOO, IOWA;

GRINDING-MILL.

SPECIFICATION forming part of Letters Patent No. 669,060, dated February26, 1901.

Application filed January 16, 1899. Serial No. 702,240. (No model.)

To LZZ whom it may concern.-

Be it known that I, THOMAS CASCADE N, J r. a resident of Waterloo, inthe county of Blackhawk, State of Iowa, have invented certain new anduseful Improvements in Grinding- Mills, of which I do declare thefollowing to be a full, clear, and exact description.

This invention has for its objects, first, to provide an improvedconstruction of metal base for supporting a feed-mill, the base beingfurnished with means for receiving and for delivering outside thereofthe ground grain as it issuesfrom between the grinding members of themill, and, second, to so construct the base that suitable gearing may belocated therein in order to utilize such gearing as a horse-power forthe driving of light machinery, such as cream-separators, feedcutters,corn-shellers, or the like.

The invention has also for its object to improve the construction ofmill in other respects, the details of which will be hereinafter fullyset forth, illustrated in the accompanying drawings, and particularlydefined in the claims at the end of this specification.

Figure 1 is a view in central vertical section through afeed-millembodying myinvention. Fig. 2 is a plan view of the baseportion of the mill, the upper part being removed and the vertical shaftbeing shown in section. Fig. 2 is a detail view in elevation, showingthe manner in which the conveyer-ring is driven from the inner cone.Fig. 3 is a view in central vertical section through the base of themill. Fig. 4 is a plan view of the mill with the feed-hopper removed,the shafts of the orbitally-movable pinions being shown in section. Fig.5 is a plan view of a mill, showing the modified construction of gatefor controlling the fced-discharge spouts. Fig. 6 is a view in verticalsection through the base shown in Fig. 5.

In the accompanying drawings I have shown my invention as applied to atriplegeared sweep-mill of the type set forth in an application filed inthe United States Patent Office by William F. Davis and myself underdate of November 23, 1898, Serial No. 697,382. It is preferred to embodythe invention in this type of triple-geared mill, because in this waygreater speed may be given to the gear mech anism or horse-power at thebase of the mill.

Manifest-1y, however, the invention may be applied to a plainsweep-mill-that is to say, to a sweep-mill in Which the grinders aredriven by a sweep without intermediate gearing for increasing the speedof the grinders. In themill shown by the accompanying drawings, as inthat set forth in the above-mentioned application of William F. Davisand myself, the inner cone A of the mill is provided at its center witha cone-post a, over which sets the hub b of the cob-breaker I), the armsof the cob-breaker being arranged to engage with lugs 0 upon the innerface or annular rack-bar 0, having outwardly-facing teeth. With theteeth of the rack-bar O mesh the pinions D, that are carried by anannular top plate D, to which the sweep will be connected in anysuitable manner for attachment of the team. Around the annular rack Gextends the outer rack E, having inwardly-facing teeth e, that alsoengage with the orbitally-movable pinions D. From the plate D extend thearms d, carrying rollers d, that engage the lower edge of the annularrack E and serve to hold the parts in position. The rack E is sustainedby the depending plate E, that rests upon the outer grinding-shell F ofthe mill, as in the hereinbefore-mentioned application for LettersPatent.

The grinding-shell F sets around the cone A and at its bottom isprovided with a grinding-ring to cooperate with a corresponding grindingring or surface at the base of the cone A, and the top of the shell F isprovided with inwardly-extending armsf, formed integral with the hubthat encircles the conepost a. The above-mentioned features ofconstruction being found in the aforesaid application for Letters Patentwill be readily understood by reference thereto and as they form no partof the present invention need not be more fully described.

The bottom of the shell F rests upon a base G, the upper edge of whichis shown as provided with lugs g, that will be connected by bolts tocorresponding lugs projecting from the base of the shell F. The upperpart of the base G is preferably formed with an inwardly-extending plateor part 9 preferably cast integral with the arms 9 and central hub g,and upon this plate 9 will rest the conveyorring H. As shown, this ringconsists of a casting the outer surface of which is partitioned byradial ribs h, and the top of the ring H is shown as extending slightlyabove the base-line of the cone A. In the upper wall of the base G areformed dischargeopenings g from which lead the dischargespouts g throughwhich the ground grain will be delivered into suitable baskets orreceptacles located adjacent the base. In Figs. 1 and 2 of the drawingsI have shown the discharge-openings g as closed by gates K, these gatesbeing formed with offset lugs 76, that engage seats in the sides of thespout g, the lower ends of the gates K being adapted to enter openingsformed in the base of the spouts, these openings serving to engage thelower ends of the gates, and thereby preventing their swinging outwardunder the pres sure of the ground grain. It is not essential, however,that the base of the spouts be formed with openings, as other provisionmay be made for preventing the outward movement of the gates, nor doesthis provision of openings for receiving the ends of the gates form anypart of the invention.

From the construction of parts as thus far defined it will be seen thatwhen revolution is imparted to the annular top plate D and the pinions Dcarried thereby revolution at an increased speed will be given to thecobbreaker arms B and to the inner cone A. The material to be groundbeing placed within the hopper B will pass downward between the cone Aand shell F and as it is ground will be delivered onto the conveyor-ringH. From the lower edge of the cone depend lugs a adapted to engage withthe ribs h of the conveyer-ring H, thereby causing this ring to revolvewith the cone. Hence it Will be seen that as the ground feed passes ontothe conveyer-ring it will be brought opposite the discharge-openings gand will pass from the discharge-spout that has its gate K removed oropen. I prefer to employ plural dischargespouts, since it is manifestthat by such construction the operation of the mill may be carried oncontinuously without danger of any wasting of grain incident to thechanging of baskets or receptacles wherein the ground grain is caught asit issues from the mill, because when the gate at one spout is open thegate at the other spout will be in closed position.

One advantage of the parts above described is that the mill is supportedupon a substantial base, which is more effective than the common woodenbase ordinarily employed in mills of this character, and by the use of asuitable conveyer (and preferably the conveyer-ring above described) thedischarge of the ground feed can be effected at the side of the base orwithout the necessity of stopping the operation of the mill. A moreimportant characteristic of my invention is, however, that it enablesthe base of the mill to be provided with a horse-power or gearing bywhich other machines commonly employed about a farm-such ascream-separators, feedcutters, corn-shellers, or the like--may bedriven. The iron base G forms a substantial support for the shaft M,that will be journaled in suitable bearings in the base G. Upon theshaft M is keyed a bevel-pinion m, that will engage with the teeth orbevel gearwheel N, that is keyed to the lower end of the vertical shaftP. This shaft P has its lower end journaled in the hub g of the spiderframe at the top of the base, while the upper end of the shaft P issquared and sets within the correspondingopeningin the conepost a. Theconnection between the post a and the upper end of the shaft 19 is suchas to permit an independent vertical movement of the cone with respectto the shaft. The shaft P is shown as provided with acollar p, thatrests upon the top of the hubg Hence it will be seen that whenrevolution is imparted to the cone A in manner above describedcorresponding revolution will be imparted to the shaft P and to thebevel gearwheel N, and the engagement of the gearwheel N with the pinionin will impart a higher speed of revolution to the shaft M, whereby anymachine, such a cream-separator or the like, may be driven.

Instead of using individual gates K for closing the dischargespouts g(when plural spouts are used) I may employ a ring R, set within theupper part of the base, this ring having two openings 1" and 1", eitherof which may be brought coincident with the corresponding feed dischargeopening 9 The ring R is provided with a handle R, whereby it may beshifted, this handle ext-ending through a slot formed in the upper partof the base G, as indicated by dotted lines in Fig. 5. It will thus beseen that when the handle R is turned in one direction, so as to bringthe openings 7" opposite the corresponding dischargespout 9 the opening1" will be moved away from the opposite dischargespout, thereby shuttingoff the discharge of ground feed through such spout. By this means oneof the discharge-spouts can be opened and the other closed by the sameoperation.

It will be seen that inasmuch as the conveyer for the ground feed islocated in the upper part of the base and in such position as to receivethe grain as it issues from between the grinding members of the mill anddeliver it outside the base all danger of the ischarge of the feed ontothe gear-wheels Within the base is avoided.

It will be readily understood that, if desired, the mill may be drivenby a suitable engine conveniently attached to the horizontal shaft thatextends into the base of the mill, and in this way if the invention beap plied to a plain sweep-mill any desired speed may be given to thegrinding members.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a grinding-mill, the combination with an outer grinding-shell andan inner, revoluble, grinding-cone, of a base therefor provided with alaterally-extending supportingflange, discharge-openings locatedimmediately above said flange and a conveyer-ring comprising a closedbottom portion resting directly upon said supporting-flange, locatedbeneath the discharge-space between said cone and shell, extendinginwardly beyond the lower edge of said cone and provided at its innoredge with an upwardly-extending circular flange, said conveyor-ringbeing suitably connected to said cone to revolve therewith, whereby theground grain will fall directly upon the closed bottom of said ring andbe conveyed thereby to said discharge-o penin gs.

2. In a grinding-mill, the combination with an outer grinding-shell andan inner, revoluble, grinding-cone, of a base therefor provided with alaterally-extending supportingflange, discharge-openings locatedimmediately above said flange and a conveyor-ring comprising a closedbottom portion resting directly upon said supporting-flange, extendinginwardly beyond the lower edge of said cone and provided withupwardly-extending radial ribs and at its inner edge with anupwardly-extending circular flange, said conveyor-ring being suitablyconnected to said cone to revolve therewith,whereby the ground grainwill fall directlyinto the pockets formed by said closed bottom and saidverticallyprojecting flange and ribs and be conveyed thereby to saiddischarge-openings.

3. In a grinding-mill, the combination with an outer grinding-shell andan inner, revoluble, grinding-cone, of a base therefor provided with anoutwardly-inclined, supporting-flange, discharge-openings locatedimmediately above said flange, a conveyor-ring comprising a. closed,outwardly-inclined bottom portion resting directly upon said inclinedsupporting-flange, extending inwardly beyond the lower edge of saidcone, and provided with upwardly-extending, radial ribs, and at itsinner edge and a circular flange projecting upwardly inside of the loweredge of said cone, and downwardly-extending lugs on said cone forengaging said radial ribs to rotate said conveyer-ring, whereby theground grain will fall directly into the pockets formed by said closedbottom and said vertically-projecting flange and ribs and be conveyedthereby to said discharge-openings.

4. In a grinding-mill, the combination with an outer grinding-shell andan inner, revoluble, grinding-cone, of a metal base for supporting saidparts provided with a laterallyextending su pporting-flange and aninternal shaft-support, discharge-openings in the outer wall of saidbase im mediately above said supporting-flange, a conveyor-ringcomprising a closed bottom resting directly upon said supporting-flange,located beneath the dischargespace between said cone and shell,extending inwardly beyond the lower edge of said cone and provided atits inner edge with an upwardly-extending vertical flange, saidconveyer-ring being connected to said cone to revolve therewith, avertical shaft for revolving said cone mounted on said shaft-support, ahorizontal drive-shaft extending through said base and intermeshinggearing mounted on said shafts, whereby the ground grain falls directlyupon the closed bottom of said oonveyer-ring and is conveyed thereby tosaid discharge-openings through which it is de-. livered outside of saidbase.

THOMAS OASOADEN, JR.

Witnesses:

J os. L. LEAVITT, IRA RODAMAR.

